Window-bead fasteneb



PATBNTED JULY 2. 1907.

R. MUMILLEN. WINDOW BEAD PASTBNBR.

L?? NAT 0l FILED HAY 9, 190

ROBERT MUMILLEN, OF IITTSBURG, PENNSYLVANIA..

WINDOW-BEAD FASTENEB..

Specification of Letters Patent.

Patented July 2, 1907.

Application tiled Htl-y 9.1906. Serial No. 315,896.

To all .whom it may concern.:

Be it known that I, ROBERT MCMILLHN, a citizen of the United Sintes, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Fastening llindowdeads, dzc., of which the following is n. specification, reference being had therein to the accompanying drawings.

The objectof this invent-ion is to provide improved fastening means for window-beads and other removable devices, which may be quickly applied and as readily removed, and which when in place securely holds the bead or other object.

While the invention is designed primarily for seem'- ng window-bends, and is so illustrated, it'is adapted for other uses.

In the accompanying drawing, Figure l is a sectional plan view of ono side of n. window-casing, showing my improvement applied thereto. Fig. 2 is an elevation of portions of the bead and casing` Fig. 3 is a sectional view, enlarged, taken on line 3-3 of Fig. l. Figs. 4 and 5 are sectional views, owing fasteners of modified form. Fig. 6 is a detail view of the fastening device.

Referring to the drawing, 2 designates the portion of the window-flame to which bead 3 is secured, and 4 is the sash.

5 is the thumb-screw henri of the fastener and 6 the shank thereof, the latter having smooth neck portion 6 which passes through the bead. In Fig. 3 a. slotted machine-screw head is shown, while in Fig. 4 a beveled wood-screw head 7 is illustrated, the latter being countersunk in the bead. Shank 6 has greater width than' thickness and is formed with two flat sides or faces 6. Proiocting from the narrower edges thereof are the diagonal thread-like teeth 8, the rear edge 9 of each tooth or thread being disposed at approximately a right angle to the face of the shank from which it projects, and the iront edge 9 thereof sloping forwardly, as shown, the formation somewhat resembling a. screw. It will be obseryed however that the device is not tapered like the ordinaryYwood-screw, tho toothed or threaded portion thereof being the same width from end to end so that al1 of the teeth cui: into the sides of the socket when the fastener is turned, as will presently appear.

Frame 2 is formed with the elongated or slot-like socketsl, oi snliicient width, length and depth to ndmit the fastener, bead 3 being of course provided with on opening 3 registering therewith. With the bend in pince, the fastener is inserted and while being pressed inward is given a quarter tnrn, thus turning shank (i crow-wise in socket 10, this movement causing teeth or threads S to cut or bite into thel sides of the socket, as clearly shown in Fig. 3, the pitch 01 the threads or teeth operating to dran' the device inward. The bend is thus securely held, and to remove it it is only neces Saly to give the fastener a quart-er turn backward, such movement disengnging the teeth or threads, where-- upon the device may he readily withdrawn. Beadopening 3 is preferably of slot-forni so that it may he adjust-ed to the sash as required.

It will be understood that sockets 10 nmy be formed in any device of wood or equivalent material to `which another object is to be removably secured, and that such other object rua-y be provided with the necesnu'y opening for passing the securingdevice.

I claim:-

1. The combination of a wood object having a socket of greater length than width. a member to be secured thereto having a passage registering with the socket, n beaded fastening device having its shank portion adapted to pass through the member to be secured and into the socket, the shank being of greater length than thickness and formed with teeth, the shank being adapted in one position to freely enter the socket und when turned adopted to force the teeth thereof into the socket walls.

2. The combination of a wood object having an oblong socket, n member to be secured thereto having an opening registering with the socket, and a headed fastening device having a shank portion adapted to pass through the member to be secured nnd into the socket. teeth pro! jecting from the shank and disposed at an angle to the axis of the shank, the sbonk being of greater width than thickness and adapted in one position to freely enter the socket and when turned adopted to force the teeth luto the socket walls and draw inwardly upon the secured member.

3. The combination of a wood object having an oblong socket, a1 member to be secured thereto having nu opening registering with the socket, n headed fastening device which extends through the member to he secured and luto the socket, teeth projecting from two opposite sides of the shank with the remaining two opposite sides of the Litter plain, the teeth being disposed nt an angle to tho axis of the shnnk, whereby when the device Is turned the teeth bite into the opposite walls ot the socket and opernte to draw the device there into and tighten the member to bc secured against the socket-formed object.

In testimony whereof l nllx my signature in presence of two wltnesscs.

` ROBERT MCMILLEN. Witnesses:

J. M. Nnsnn, Vinum M. Manns. 

